Where is mica used in its pure form?

This heading covers natural mica worked more than by sawing or trimming (for example, cut to shape), as well as materials of agglomerated (composite) mica or pulped (regenerated) mica and articles of all these materials.

This heading covers articles obtained from these plates and fragments. Their ribs do not have burrs, since stamping is used to produce them.

Natural mica is often used in its pure form in the form of plates or fragments. But since the small size of the plates, their low elasticity, high cost, etc. In many cases, the use of natural mica is difficult; it is often replaced by agglomerated (composite) mica (for example, micanite, micafolium), which is obtained by binding mica fragments superimposed on each other or located nearby, using shellac, natural resins, plastics, asphalt, etc. .d. Agglomerated mica is made in the form of sheets, plates or strips of any thickness, often with a fairly large surface area. These sheets, etc. usually reinforced on one or (usually) both sides with textile material or fiberglass, paper or asbestos.

Thin mica sheets can also be produced without the need for binders by subjecting mica powder and pulped mica waste to thermal, chemical and mechanical treatments similar to those used to make paper (reclaimed mica).

These thin sheets are then applied to a paper or textile backing using a flexible adhesive; they can also be used to make plates and strips of a given thickness by laying down several thin sheets of mica and securing them with an organic binder.

This heading includes sheets, strips and rolls in lengths; cut pieces in the form of disks, quadrangles (including squares), etc. for use for various purposes; molded products such as pipes, pipelines, etc. All these products can be painted in the body or on the surface, drilled, milled or otherwise processed.

Due to its high heat resistance and relative transparency, mica is, inter alia, used in the manufacture of viewing windows for furnaces, drying chambers, etc., unbreakable lamps, safety glasses, etc. But it is mainly used in electrical devices due to its high dielectric properties (in the production of motors, generators, transformers, capacitors, resistors, etc.). It should, however, be noted that mica insulators and other mica insulating parts of electrical apparatus, even when disassembled, fall in headings 8546 to 8548, and mica dielectric capacitors (capacitors) fall in heading 8532.

This heading also does not include:

• (a) mica powder and mica waste (heading 2525);
• (b) paper or paperboard coated with mica powder (heading 4810 or 4814), and fabrics coated with mica powder (heading 5907). These products should not be confused with the agglomerated or regenerated mica described above;
• (c) expanded vermiculite (heading 6806) (see relevant explanatory notes);
• (d) safety glasses and other eye protection devices made of mica (heading 9004);
• (e) decorative Christmas tree decorations made of mica (heading 9505).

68 Products made of stone, plaster, cement, asbestos, mica or similar materials: HS Notes

• 1. This group does not include:
  • (a) goods of Chapter 25;
  • (b) impregnated or coated paper and paperboard of heading 4810 or 4811 (for example, paper and paperboard coated with mica or graphite powder, bituminized or asphalted);
  • (c) impregnated or coated textile fabrics of Group 56 or 59 (for example, fabric coated with mica powder, bituminized or asphalted);
  • (d) articles of Chapter 71;
  • (e) instruments or parts thereof of Chapter 82;
  • (e) lithographic stones of heading 8442;
  • (g) electrical insulators (heading 8546) or fittings made of insulating materials, heading 8547;
  • (h) dental burs (heading 9018);
  • (i) articles of Chapter 91 (for example, watches not intended to be worn or carried, and cases for them);
  • (j) articles of Chapter 94 (for example, furniture, lamps and lighting equipment, prefabricated building structures);
  • (k) articles of Chapter 95 (for example, toys, games and sports equipment);
  • (l) Articles of heading 9602 made from materials specified in note 2(b) to Chapter 96, or heading 9606 (for example, buttons), 9609 (for example, pencil leads), 9610 (for example, slates) or 9620 (for example, , monosupports, bipeds, tripods and similar products); or
  • (m) articles of Chapter 97 (for example, works of art).

  68 Products made of stone, plaster, cement, asbestos, mica or similar materials: Explanations to the HS

  GENERAL

  This group includes:

  • (A) Miscellaneous products of Chapter 25 processed to a greater extent than permitted by Note 1 to Chapter 25.
  • (B) Products excluded from Chapter 25 in accordance with Note 2(e) to that Chapter.
  • (B) Certain products made from Section V mineral materials.
  • (D) Articles made from certain materials of Chapter 28 (for example, artificial abrasives).

  Some of the products listed in paragraph (C) or (D) may be agglomerated with binders, contain fillers, may be reinforced or, in the case of abrasives or mica, may be applied to a backing or base of textile material, paper, cardboard or other materials.

  Most of these products and finished products are obtained by various methods (eg plastic processing, molding), resulting in changes in the form rather than the nature of the original material. Some products are obtained by agglomeration (for example, asphalt products, or some products, such as grinding wheels, are agglomerated due to the vitrification of the binder); other products are obtained by hardening in autoclaves (sand-lime bricks). This group also discusses some products made as a result of processes associated with a more radical transformation of the feedstock (for example, melting to produce slag wool, fused basalt, etc.).

  Articles made by firing pre-formed clay (that is, ceramics) are generally classified in Chapter 69, except for ceramic abrasives of heading 6804. Glass and glass products, including glass ceramics, fused silica or other fused silicas, are classified in Chapter 70.

  In addition to certain items specifically listed in the exceptions to the explanatory notes below, the following items are not included in this chapter:

  • (a) diamonds, other precious and semi-precious stones (natural, artificial or reconstructed), articles thereof and all other articles of Chapter 71;
  • (b) lithographic stones of heading 8442;
  • (c) panels (for example, of slate, marble, asbestos cement) drilled or otherwise prepared for use as control panels (heading 8538), and insulators and parts thereof of insulating materials of heading 8546 or 8547;
  • (d) articles of Chapter 94 (for example, furniture, lamps and lighting equipment, prefabricated building structures);
  • (e) toys, games and sports equipment (group 95);
  • (e) mineral substances of a kind used for carving specified in Note 2(b) to Chapter 96, processed or in finished articles (heading 9602);
  • (g) original sculptures and figurines, collectibles and Group 97 antiques.

  68 Products made of stone, plaster, cement, asbestos, mica or similar materials: Additional explanations to the HS (Volume VI)

  GENERAL

  This group includes not only ready-to-use products, but also semi-finished products (in some headings), which may require additional processing before they are used for their intended purpose (for example, mixtures based on asbestos or asbestos and magnesium carbonate of heading 6812).

  68 Products made of stone, gypsum, cement, asbestos, mica or similar materials: Additional notes of the HS HS of the EAEU

  • 1. In subheadings 6815 91 000 2 and 6815 99 000 2, the term “chemical binder” means an inorganic component of a refractory material (a solution of phosphates, chlorides, sulfates, alkali silicates or other salts), as a result of the interaction with which other components of the refractory material at a temperature below 800 °C, the product is given strength during the manufacturing process.

  

  

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  UNP 191445455

  Mica is the general name for a broad class of aluminosilicate minerals of the phyllosilicate family. Most types of mica crystallize in a monoclinic system and are characterized by almost perfect splitting of the crystal along the main axis, which allows large crystals, like a kind of “book,” to be divided into countless thin, flexible flakes with high fracture toughness.
  These minerals can be divided into four main types, named after the common mineral in each group: muscovite, phlogopite, biotite, lepidolite. Of these, only muscovite and phlogopite are found in nature on a large scale, which allows their industrial use. Mica has high thermal and chemical strength.

  [Geological Dictionary: in 2 volumes. — M.: Nedra. Edited by K. N. Paffengoltz et al. 1978.]

  Term heading: Rocks

  Encyclopedia of terms, definitions and explanations of building materials. – Kaliningrad. Edited by Lozhkin V.P. . 2015-2016.

  • Random eccentricity
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  See what “Mica” is in other dictionaries:

  • MICA – female or Sluda, Vologda. (from layer) layered, in its pure form, like glass, a transparent fossil that is used instead of glass, for example. in lanterns, etc. Mica windows. Mica slate. Mica and micaceous fossil containing mica; |. . Dahl’s Explanatory Dictionary
  • MICA – (mica obsolete), mica, plural. (special) mica, mica, women. A transparent mineral of complex composition, colorless or yellow in color, usually layered, widely used in various branches of technology. “With a window made of mica, low, without a pipe, it was ours. . Ushakov’s Explanatory Dictionary
  • MICA – MICA, s, female. Transparent layered mineral. | adj. mica, oh, oh. Mica vein. Mica window (in the old days: with mica plates inserted into the frames). Ozhegov’s explanatory dictionary. S.I. Ozhegov, N.Yu. Shvedova. 1949 1992 . Ozhegov’s Explanatory Dictionary
  • mica – a mineral from the group of aluminosilicates. One of the most common rock-forming minerals. According to their chemical composition, aluminum (muscovite, phlogopite), magnesium-ferruginous (biotite), lithium (lepidolite), vanadium and chromium micas are distinguished . Geographical Encyclopedia
  • Mica – (tech.) In technology, mica is used mainly as a very good insulator of electricity, which does not lose its properties when heated even before hardening. Due to the softness and flexibility of mica sheets, they can be cut with scissors and using. . Encyclopedia of Brockhaus and Efron
  • mica – mica, gen. mica; pl. mica, kind. mica and obsolete mica, gen. mica . Dictionary of difficulties of pronunciation and stress in modern Russian
  • mica – dial. sludinka, sludya – the same, Olonetsk. (Kulik.), Bulgarian mica – the same, Czech. slida, slvts. sl᾽uda, slieda. Czech borrowed word from Russian, according to Golub-Kopechny (337). They assume kinship with the servants (see) (Mladenov (592), Transfiguration (II, 332)). . Etymological Dictionary of the Russian Language by Max Vasmer
  • mica – mica, s, y; plural (special) mica, mica, mica . Russian verbal stress
  • Mica – and. A transparent layered mineral of complex composition, widely used in technology. Ephraim’s explanatory dictionary. T. F. Efremova. 2000 . Modern explanatory dictionary of the Russian language by Efremova
  • mica – mica, mica, mica, mica, mica, mica, mica, mica, mica, mica, mica, mica, mica (Source: “Complete accentuated paradigm according to A. A. Zaliznyak”) . Forms of words
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